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43results about How to "Save material and manpower" patented technology

Motor capable of realizing stator closed and rotor open ventilation mode by adopting axial-flow ventilation

The invention discloses a motor capable of realizing a stator closed and rotor open ventilation mode by adopting axial-flow ventilation. An adopted shaft is provided with an external circumferential spiral groove, and the spiral groove matches with axial-flow fans with two clingy ends and the same spiral directions to form an axial-flow combined ventilation apparatus; the apparatus is arranged in a rotor and at two ends of the rotor, and the extra axial space of the motor is not occupied, so that the motor is compact in structure; due to different steering directions, airflow directions are also different but the motor can be cooled; in combination with labyrinth seal, a combined cooling mode of stator closed ventilation cooling and rotor open ventilation cooling of the motor is realized, and the combined cooling mode enables the insulation reliability of a stator and the heat dissipation capability of a rotor to be both ensured and improves the motor efficiency; a stator cooling air duct consists of vent holes (2x), a stator air duct (2h) and an air duct section (6h); a rotor cooling air duct consists of vent holes (5y), gaps (9b), a spiral groove (4b) and gaps (10b); the two cooling air ducts are connected in series; and the spiral combined apparatus provides air pressures for the cooling air ducts.
Owner:滁州精镁装备模具制造有限公司

Low-voltage distribution network three-phase unbalanced treatment system and method controlled by phase-change switch cluster

The invention relates to a low-voltage distribution network three-phase unbalanced treatment system and method controlled by a phase-change switch cluster. The system has the following technical characteristics: the system comprises a current transformer, a main control terminal, main control switches and intelligent phase-change switches; the current transformer is installed on the low voltage side of a transformer and connected to a three-phase power grid, and is used to measure a current signal of the low voltage side of the transformer and a beginning end of a three-phase branch line; themain control terminal is used to monitor the unbalance degree of a three-phase line on the low-voltage side of the distribution transformer, collect three-phase current data at the beginning ends of three-phase branch lines in real time and issue a phase-change instruction to the intelligent phase-change switches; the main control switches are connected with the intelligent phase-change switches,and is used to monitor the unbalance degree of the beginning ends of the three-phase branch lines and perform phase-change control on the intelligent phase-change switches; and the intelligent phase-change switches are connected with loads, and are used to receive the phase-change instructions of the main control terminal or the main control switches to switch phases. The imbalance degree of the low-voltage side of the distribution transformer and the beginning ends of the three-phase branch lines can be effectively reduced.
Owner:ELECTRIC POWER SCI & RES INST OF STATE GRID TIANJIN ELECTRIC POWER CO +3

Hydraulic punching machine for sectional materials

The invention discloses a hydraulic punching machine for sectional materials. The hydraulic punching machine comprises a hydraulic oil cylinder, a piston rod, a guiding slide block, a lower die, a hydraulic tank, an adsorption body, a punch body and cutting teeth. The upper end of the hydraulic tank is fixedly connected with a machine frame, the hydraulic oil cylinder is arranged at the upper end of the machine frame, and the lower portion of the hydraulic oil cylinder is connected with the guiding slide block through the piston rod; the lower end of the guiding slide block is connected with the punch body, the cutting teeth are arranged at the bottom end of the punch body, the adsorption body is arranged in the punch body, and the upper end of the adsorption body is connected with the punch body through a spring. According to the hydraulic punching machine for the sectional materials, manual punching through manpower is replaced by punching through the hydraulic oil cylinder, the machining mode is high in efficiency, machining cost is low, operation is convenient, and a large amount of resources and manpower are saved; the adsorption body and the spring are arranged in the punch body, so that cut-off parts of the sectional materials are convenient to take down and recycle, and the situation that the cut-off parts affect punching operation is effectively avoided.
Owner:TIANJIN FUDACHANG TECH

Data transmission plate of terminal and preparation process thereof

The invention relates to the technical field of the data transmission connecting terminal, especially to a data transmission plate of a terminal and a preparation process thereof. The data transmission plate is characterized in that a plurality of recessed terminal plate slots are formed in an insulting body; and electroplating terminal plates are embedded into the terminal plate slots tightly. In addition, the process includes: an insulting body forming step, an electroplating zone activation step, and a step of electroplating terminal plate forming by electroplating. Because the electroplating terminal plates are formed in the terminal plate slots, metal stamping for forming electroplating terminal plates is not required when the terminal is formed, thereby saving lots of material resources, manpower, and materials. Besides, on the basis of tight combination of the electroplating terminal and the terminal plate slot, PCB-based positioning is not needed and line connection can be carried out directly at the electroplating terminal plates at the rear of the insulating body, so that there is no need to use a traditional PCB connecting plate to carry out positioning and connecting. Moreover, the structure is simple and the costs and resources are saved.
Owner:东莞市复达复合材料有限公司

System and method for controlling bidirectional direct current power supply of transformer substation

ActiveCN109449944ARealize automatic nuclear capacityReduce automatic core capacityElectric powerSecondary cells servicing/maintenanceElectricityTransformer
The invention is applicable for the technical field of transformer substations, and provides a system and a method for controlling the bidirectional direct current power supply of a transformer substation. The system comprises a bidirectional conversion module, a control module and a battery power supply module, wherein the bidirectional conversion module is used for sending an off-grid signal tothe control module when a power grid is powered off; the control module is used for sending an emergency power supply mode starting command to the bidirectional conversion module according to the off-grid signal or sending a capacity check mode starting command to the bidirectional conversion module according to user input; the bidirectional conversion module is used for starting an emergency power supply mode and sending a first discharge command to the battery power supply module or sending a second discharge command to the battery power supply module in the capacity check mode; the batterypower supply module is used for outputting first direct current according to the first discharge command or outputting second direct current according to the second discharge command, and the bidirectional conversion module is used for recording the electric quantity information of second direct current. Power can be supplied emergently, the investment of uninterruptible power supply equipment isreduced, capacity check further can be carried out on the battery module automatically, manual operation is reduced, and the manpower and material resources are saved.
Owner:KEHUA DATA CO LTD +1

Sounding pipe parallel limiting device

The invention provides a sounding pipe parallel limiting device. Sounding pipes are connected with a reinforcement cage in a foundation pile; the steel reinforcement cage comprises vertical ribs parallel to each other, inner stirrups and outer stirrups, wherein the inner stirrups and the outer stirrups are connected with the vertical ribs. The limiting device comprises a double-layer ribbed steelring connected with the vertical ribs and vertical sleeves arranged on the inner side of the steel ring at equal intervals. The sleeves are used for accommodating the sounding pipes. According to thetechnical scheme provided by the invention, by adopting the double-layer ribbed steel ring and the vertical sleeves arranged on the inner side of the double-layer ribbed steel ring, the requirementsof parallel and equidistant installation of the sounding pipes can be met; and the limiting device is annular, enough space is reserved for concrete pouring and vibrating in the center, and detectionsignals cannot be affected. The parallel limiting device is simple in structure and convenient to apply, and can replace the effect of inner stirrups or inner and outer stirrups in reinforcement cagemanufacturing, so that raw materials and material resources and manpower of the inner stirrups are saved, and the cost and the construction complexity are reduced while the performance is improved.
Owner:CHINA ELECTRIC POWER RES INST +1

Efficient spraying machine special for machinery-picked cotton

The invention discloses an efficient spraying machine special for machinery-picked cotton. The efficient spraying machine comprises a vehicle body, walking wheels arranged below the vehicle body, a plant divider installed on the outer sides of the walking wheels and cameras arranged on the vehicle body and located ahead of the walking wheels. The efficient spraying machine is convenient to operate; the plant divider is simple in structure and convenient to operate; the positions of plant-divider protecting plates arranged in front of the wheels of the cotton spraying machine can be conveniently and rapidly adjusted vertically, machinery damage to cotton plants is reduced, repeated disassembling is avoided, material resources and manpower are saved, and plant dividing and spraying efficiency is improved; due to high-speed rotating air flow generated by high-pressure air and spraying head bodies, liquid pesticide can penetrate through plant canopies, and the liquid applying rate of leaves can be greatly increased; the overall height of high-pressure spraying air bellows can be adjusted through a lifting hydraulic cylinder, and atomized liquid pesticide can be simultaneously sprayed onto roots, stems and the plant canopies of the machinery-picked cotton; the positions of plant-canopy spraying heads at the upper portions of the high-pressure spraying air bellows can be adjusted, and proper installation positions can be selected along with growth of cotton plants.
Owner:HEBEI KANGJIAYUAN PLANT PROTECTION TECH CO LTD

Alternating current transmission line iron tower

The invention discloses an alternating current transmission line iron tower which comprises a tower body and a cross arm at the top end of the tower body. The middle and the two ends of the lower side of the cross arm are each connected with a lightning-proof insulator. The lower ends of the lightning-proof insulators at the two ends are each connected with a side phase conductor. The lower end of the lightning-proof insulator in the middle is connected with a middle phase conductor. A compound fiber overhead ground wire is arranged on the waist of the tower body. The conductors are suspended on the lightning-proof insulators, so that the alternating current transmission line iron tower has the functions of suspension, insulation and lightning prevention at the same time. When ground lightning directly strikes the tower or the conductors, the lightning overvoltage will make the lightning-proof insulators move, impact energy is absorbed, the overvoltage is suppressed so as to protect the insulators against flashover, tripping of a transmission line is avoided, and power supply reliability is improved; the compound fiber overhead ground wire is located below the three phase conductors, so that the normal power communication function is achieved, the lightning overvoltage on the lightning-proof insulators can be decreased due to the coupling effect, the lightning-proof level is further improved, the lightning tripping frequency of the transmission line is effectively decreased, and the power supply reliability is improved.
Owner:STATE GRID CORP OF CHINA +2

Method for preserving arbuscular mycorrhizal fungi

The invention discloses a method for preserving arbuscular mycorrhizal fungi. The moisture in propagules of the arbuscular mycorrhizal fungi is fully reduced before cryopreservation of strains. The method comprises the following steps: ventilating and drying at normal temperature, and reducing the majority of moisture in a matrix material so that the moisture content is reduced to below 8%; and then reducing the moisture content in the propagules by utilizing silica gel drying in a glass dryer so that the moisture content of a matrix is reduced to below 5%. The moisture content of the propagule material is reduced by two steps so that the moisture content in arbuscular mycorrhizal fungi spores and mycelial cells is slowly reduced, thus being beneficial to maintain the vitality of the strains and simultaneously avoiding the damage of ice crystals to the cells during the rapid freezing. Through the experimental comparison, the activity of strains of the arbuscular mycorrhizal fungi can be effectively preserved. Compared with a pot culture inoculating method and an cryopreservation method, the method does not occupy a culture greenhouse, does not need the regular artificial inoculation and does not need a strain protection agent and a liquid nitrogen preservation material, the operation is simple, and the material resources and manpower are saved.
Owner:GUANGXI INST OF BOTANY THE CHINESE ACAD OF SCI

Matrix soil for salvia splendens cultivation and use method thereof

The invention discloses a matrix soil for salvia splendens cultivation and a use method thereof. The matrix soil is obtained by compounding of ordinary soil, a sludge composting product and peat soil. The matrix soil has good nutrient supply capability, has high content of organic matters, nitrogen, phosphorus, potassium and nutrients, and can provide a good nutritional status for salvia splendens growth. Adding of the composting product can improve the buffering ability of the matrix soil to acid and alkali and improve the cation exchange capacity therein, thus improving the fertilizer retaining capacity of the matrix soil. At the same time, the matrix soil has good physical properties, good soil porosity and capillary porosity, and improves ventilation and water permeability as well as water holding capacity of the matrix soil. The matrix soil combines water retention, fertilizer retention, air permeability and other characteristics, and can meet the physical structural requirements of salvia splendens for matrix soil. While used for cultivation, the matrix soil provided by the invention also can effectively consume municipal sewage sludge and achieve resource utilization, promotes the pollution control and recycling of resources, thus having very high value of environmental protection.
Owner:SUZHOU RES INST OF TONGJI UNIV +2

Environmental capacity acquisition method and device based on O3 standard constraint

The invention discloses an environmental capacity acquisition method and device based on O3 standard constraint. The environmental capacity acquisition method based on O3 standard constraint comprises the following steps: acquiring an environmental capacity input parameter set of a target year; converting NOx coefficients and/or VOCs coefficients in the environmental capacity input parameter set to generate an environmental capacity accounting parameter set; acquiring an air quality model; acquiring a reference O3 simulation concentration; acquiring an accounting O3 simulation concentration; obtaining a concentration reduction proportion through the reference O3 simulation concentration and the accounting O3 simulation concentration; and judging whether an accounting O3 simulation concentration reaches a first preset condition or not and a second preset condition is reached according to the concentration reduction proportion, and if so, acquiring an environment capacity accounting parameter set corresponding to the accounting O3 simulation concentration. According to the environmental capacity acquisition method based on O3 standard constraint, the whole process is not affected by human factors, the result is accurate, and compared with the prior art, material resources and manpower are saved.
Owner:北京清创美科环境科技有限公司

A kind of preservation method of arbuscular mycorrhizal fungus

The invention discloses a method for preserving arbuscular mycorrhizal fungi. The moisture in propagules of the arbuscular mycorrhizal fungi is fully reduced before cryopreservation of strains. The method comprises the following steps: ventilating and drying at normal temperature, and reducing the majority of moisture in a matrix material so that the moisture content is reduced to below 8%; and then reducing the moisture content in the propagules by utilizing silica gel drying in a glass dryer so that the moisture content of a matrix is reduced to below 5%. The moisture content of the propagule material is reduced by two steps so that the moisture content in arbuscular mycorrhizal fungi spores and mycelial cells is slowly reduced, thus being beneficial to maintain the vitality of the strains and simultaneously avoiding the damage of ice crystals to the cells during the rapid freezing. Through the experimental comparison, the activity of strains of the arbuscular mycorrhizal fungi can be effectively preserved. Compared with a pot culture inoculating method and an cryopreservation method, the method does not occupy a culture greenhouse, does not need the regular artificial inoculation and does not need a strain protection agent and a liquid nitrogen preservation material, the operation is simple, and the material resources and manpower are saved.
Owner:GUANGXI INST OF BOTANY THE CHINESE ACAD OF SCI
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